Saturn V Capital Management LP: DISC MEDICINE INC (IRON): Quarterly 13F Position History
As of Q1 2026, Saturn V Capital Management LP reported 449,926 shares of DISC MEDICINE INC (IRON), worth $28.8M and representing 5.2% of its 13F equity book. Quarter-over-quarter share count change: + 151,497 (+50.8%) . The position first appeared in Q4 2023 and has been disclosed across 10 13F-HR filings in Pactolio's tracked window.
- 449,926Shares Held (Latest Filing)
- $28.8MReported Market Value (Latest Filing)
- 5.2%Portfolio Weight (% of 13F Equity Book)
- +151,497Quarter-over-Quarter Share Change
- +$5.1MQuarter-over-Quarter Value Change
- 518,177Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 10 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 449,926 | +151,497 | +50.8% | $28.8M | 5.2% | $63.9 |
| Q4 2025 | 298,429 | 42,468 | -12.5% | $23.7M | 4.3% | $79.4 |
| Q3 2025 | 340,897 | 55,218 | -13.9% | $22.5M | 4.9% | $66.1 |
| Q2 2025 | 396,115 | 122,062 | -23.6% | $21.0M | 8.5% | $53.0 |
| Q1 2025 | 518,177 | +8,771 | +1.7% | $25.7M | 13.0% | $49.6 |
| Q4 2024 | 509,406 | 1,635 | -0.3% | $32.3M | 12.6% | $63.4 |
| Q3 2024 | 511,041 | +7,952 | +1.6% | $25.1M | 9.0% | $49.1 |
| Q2 2024 | 503,089 | +248,286 | +97.4% | $22.7M | 8.6% | $45.1 |
| Q1 2024 | 254,803 | +190,019 | +293.3% | $15.9M | 6.4% | $62.3 |
| Q4 2023 | 64,784 | — | — | $3.7M | 1.4% | $57.8 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Saturn V Capital Management LP first disclose a IRON position in 13F-HR filings?
Saturn V Capital Management LP first reported DISC MEDICINE INC (IRON) on its 13F-HR filing for the period ending 2023-12-31 (Q4 2023). The position has appeared on 10 reported quarters within Pactolio's tracked window.
What was Saturn V Capital Management LP's most recent quarter-over-quarter share-count change in IRON?
Between Q4 2025 and Q1 2026, Saturn V Capital Management LP added 151,497 shares of IRON (+50.8%), bringing the total reported position to 449,926 shares at a market value of $28.8M.
Does the implied price-per-share represent Saturn V Capital Management LP's cost basis in IRON?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.